Ciiotjd clifford conkling



C. C. CONKLING.

METAL SHEET PILING SECTION AND WALL. APPLICATION FILED JULY 1, I912. RENEWED 0H. 6, 1919.

1,338,287. a e Apr. 27, 1 20.

I r aoaafazzhibgg Oz UNITED sTATEs PATENT oEEIoE.

CLOUD CLIFFORD CONKLING, 0F BUFFALO, NEW YORK, ASSIGNOR TO LACKAWANNA STEEL COMPANY, OF LACKAWANNA, NEW YORK, A CORPORATION OF NEW YORK.

METAL SHEET-FILING SECTION AND WALL.

Specification of Letters Patent.

Application filed July 1, 1912, Serial No. 707,006. Renewed October 6, 1919. Serial No. 328,926.

To all whom it may concern:

Be it known that I, CLOUD CLIFFORD CoNK- LING, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Metal Sheet-Piling Section and Wall, of which the following is a specification.

My invention relates to a. special form of steel sheet piling particularly adapted for locations where the pressures on the work, due to great head of water or liquid mud, is too great to be resisted by single piling sections.

Heretofore. for heavy braced work I have devised the so called arched-web piling, in which the modulusand moment of resistance of the section are greatly increased, but with the increased demands on metal sheet piling, cases arise involving extraordinary loads, and for these special cases I have devised the special form of built up section here described which is made by combining and riveting two of my said arched-web sections together the result being that the modulus and'moment of resistance, with reference to the neutral axis of the two sections so combined, are much greater than twice that of a single section with reference to its own neutral axis.

My invention will be understood by refer-- ence to the drawing herewith, of which the single view shows in plan, a portion of a wall in which my combined sections are used.

A indicates the special combined section referred to, which consists of two archedweb. sections set back to back and secured together by rivets 2 2.

These sections are then assembled in the wall alternately with other arched-web sections 3 arranged as at B with a pocket between. The result is that the interlocks at each joint are doubled and the modulus and moment of resistance are much more than doubled. The increase in the moment of resistance of the piles thus combined, over the sum of the moments of the two separate, is over for the back to back arrangement at A and substantially 250% for the arrangement with the pocket at B. It will be understood that A indicates the combined or composite section as distinguished from the simple sections 3-3 from which it is made up.

' same two sections when used uncombined.

Such combination from two piles riveted together hold the adjacent piles on each side firmly in their relative positions causing said adjacent piles to act together.

This effect "is increased where said adjacent piles are further fastened by transverse Patented Apr. 27, 1920.

bolts or by filling the large pocket, between the two single sections, with concrete, or by pouring the open interlocking pockets of the double joint, with grout after the wall has been driven. I

. By thus filling the large pockets and the small pockets of the interlocks with concrete the combined piles, individually or collectively, can be used as bearing piles as well as sheet piles.

It will be understood that all the advantages of the interlocking joint are retained including the possibility of a suflicient degree of angular arrangement for most purposes, for with the design here shown there can be an angular adjustment of the sections, with relation to each other, up to an angle of 6 degrees. The tensional and shearing strength of the double interlocking joint for one of these combined piles is twice as great as the smaller properties in case of a single pile.

I claim:

1. A wall of metal sheet piling comprising two difi'erent forms of elements alternately arranged, one being a composite section formed of piling sections having on their. edges interlocking members and having their webs arched, the webs of said sections having their convex sides opposed and rivets uniting the webs, the second section consisting of two arched sections similar to the half sections used in the preceding but set reversely with the arched webs arranged having their convex sides opposed and rivets uniting the webs, the second section consisting of two arched sections similar to the half sections used in the preceding but set reversely with the arched webs arranged outwardly and the interlocking elements in tions each having interlocking members on its edges and secured by interlocking engagement with the sections of the first element, substantially as described.

4. A double wall of metal sheet piling comprising two diflerent forms of elements alternately arranged, one being a composite element formed of piling sections secured together, each section having on its edges interlocking members adapted independently to interlock with members of adjacent sections and the second element consistingof two piling sections each having interlocking members on its edges and secured by interlocking engagement with the sections of the first element and said piling sections being of similar form and having arched web portions and the sections of the alternate elements being reversely arranged,

substantially as described.

5. A wall of metal sheet piling comprising two different forms of elements altercent sections by means of the interlocking members on the edges, substantially as described.

6. A double wall of metal sheet piling comprising two different forms of elements alternately arranged, one being a composite element formed of piling sections having on their edges interlocking flanges and having the webs arched and secured together by rivets or bolts, the second element consisting of two arched sections similar to the half sections of the first element and secured by interlocking with the sections of the first element and the piling sections of the alternate elements being set reversely, one with the convex sides of the arched web opposed and the other having'the web portions spaced to form a pocket therebetween, substantially as described.

In testimony whereof .I have signed my name to this specification in the presence of two subscribingwitnesses.

CLOUD CLIFFORD CONKLING.

Witnesses:

J A. Non, A. L. MOGEE. 

